2 Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 libdcp is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with libdcp. If not, see <http://www.gnu.org/licenses/>.
21 /** @file src/smpte_subtitle_asset.cc
22 * @brief SMPTESubtitleAsset class.
25 #include "smpte_subtitle_asset.h"
26 #include "smpte_load_font_node.h"
27 #include "font_node.h"
28 #include "exceptions.h"
30 #include "raw_convert.h"
31 #include "dcp_assert.h"
35 #include "compose.hpp"
36 #include <libxml++/libxml++.h>
37 #include <boost/foreach.hpp>
38 #include <boost/algorithm/string.hpp>
42 using std::stringstream;
46 using boost::shared_ptr;
48 using boost::is_any_of;
49 using boost::shared_array;
50 using boost::dynamic_pointer_cast;
53 SMPTESubtitleAsset::SMPTESubtitleAsset ()
54 : _intrinsic_duration (0)
56 , _time_code_rate (24)
61 /** Construct a SMPTESubtitleAsset by reading an MXF or XML file.
62 * @param file Filename.
64 SMPTESubtitleAsset::SMPTESubtitleAsset (boost::filesystem::path file)
65 : SubtitleAsset (file)
67 shared_ptr<cxml::Document> xml (new cxml::Document ("SubtitleReel"));
69 shared_ptr<ASDCP::TimedText::MXFReader> reader (new ASDCP::TimedText::MXFReader ());
70 Kumu::Result_t r = reader->OpenRead (file.string().c_str ());
72 if (!ASDCP_FAILURE (r)) {
74 reader->ReadTimedTextResource (s, 0, 0);
78 ASDCP::WriterInfo info;
79 reader->FillWriterInfo (info);
80 _id = read_writer_info (info);
84 xml->read_file (file);
85 _id = remove_urn_uuid (xml->string_child ("Id"));
86 } catch (cxml::Error& e) {
87 boost::throw_exception (
89 String::compose ("could not read subtitles from %1; MXF failed with %2, XML failed with %3", file, static_cast<int> (r), e.what ())
95 _load_font_nodes = type_children<dcp::SMPTELoadFontNode> (xml, "LoadFont");
97 _content_title_text = xml->string_child ("ContentTitleText");
98 _annotation_text = xml->optional_string_child ("AnnotationText");
99 _issue_date = LocalTime (xml->string_child ("IssueDate"));
100 _reel_number = xml->optional_number_child<int> ("ReelNumber");
101 _language = xml->optional_string_child ("Language");
103 /* This is supposed to be two numbers, but a single number has been seen in the wild */
104 string const er = xml->string_child ("EditRate");
105 vector<string> er_parts;
106 split (er_parts, er, is_any_of (" "));
107 if (er_parts.size() == 1) {
108 _edit_rate = Fraction (raw_convert<int> (er_parts[0]), 1);
109 } else if (er_parts.size() == 2) {
110 _edit_rate = Fraction (raw_convert<int> (er_parts[0]), raw_convert<int> (er_parts[1]));
112 throw XMLError ("malformed EditRate " + er);
115 _time_code_rate = xml->number_child<int> ("TimeCodeRate");
116 if (xml->optional_string_child ("StartTime")) {
117 _start_time = Time (xml->string_child ("StartTime"), _time_code_rate);
120 shared_ptr<cxml::Node> subtitle_list = xml->optional_node_child ("SubtitleList");
122 list<shared_ptr<dcp::FontNode> > font_nodes;
123 BOOST_FOREACH (cxml::NodePtr const & i, subtitle_list->node_children ("Font")) {
124 font_nodes.push_back (shared_ptr<FontNode> (new FontNode (i, _time_code_rate, "ID")));
127 list<shared_ptr<dcp::SubtitleNode> > subtitle_nodes;
128 BOOST_FOREACH (cxml::NodePtr const & i, subtitle_list->node_children ("Subtitle")) {
129 subtitle_nodes.push_back (shared_ptr<SubtitleNode> (new SubtitleNode (i, _time_code_rate, "ID")));
132 parse_subtitles (xml, font_nodes, subtitle_nodes);
135 ASDCP::TimedText::TimedTextDescriptor descriptor;
136 reader->FillTimedTextDescriptor (descriptor);
141 ASDCP::TimedText::ResourceList_t::const_iterator i = descriptor.ResourceList.begin();
142 i != descriptor.ResourceList.end();
145 if (i->Type == ASDCP::TimedText::MT_OPENTYPE) {
146 ASDCP::TimedText::FrameBuffer buffer;
147 buffer.Capacity (10 * 1024 * 1024);
148 reader->ReadAncillaryResource (i->ResourceID, buffer);
151 Kumu::bin2UUIDhex (i->ResourceID, ASDCP::UUIDlen, id, sizeof (id));
153 shared_array<uint8_t> data (new uint8_t[buffer.Size()]);
154 memcpy (data.get(), buffer.RoData(), buffer.Size());
156 list<shared_ptr<SMPTELoadFontNode> >::const_iterator j = _load_font_nodes.begin ();
157 while (j != _load_font_nodes.end() && (*j)->urn != id) {
161 if (j != _load_font_nodes.end ()) {
162 _fonts.push_back (Font ((*j)->id, (*j)->urn, Data (data, buffer.Size ())));
167 /* Get intrinsic duration */
168 _intrinsic_duration = descriptor.ContainerDuration;
170 /* Guess intrinsic duration */
171 _intrinsic_duration = latest_subtitle_out().as_editable_units (_edit_rate.numerator / _edit_rate.denominator);
175 list<shared_ptr<LoadFontNode> >
176 SMPTESubtitleAsset::load_font_nodes () const
178 list<shared_ptr<LoadFontNode> > lf;
179 copy (_load_font_nodes.begin(), _load_font_nodes.end(), back_inserter (lf));
184 SMPTESubtitleAsset::valid_mxf (boost::filesystem::path file)
186 ASDCP::TimedText::MXFReader reader;
187 Kumu::Result_t r = reader.OpenRead (file.string().c_str ());
188 return !ASDCP_FAILURE (r);
192 SMPTESubtitleAsset::xml_as_string () const
195 xmlpp::Element* root = doc.create_root_node ("dcst:SubtitleReel");
196 root->set_namespace_declaration ("http://www.smpte-ra.org/schemas/428-7/2010/DCST", "dcst");
197 root->set_namespace_declaration ("http://www.w3.org/2001/XMLSchema", "xs");
199 root->add_child("Id", "dcst")->add_child_text ("urn:uuid:" + _id);
200 root->add_child("ContentTitleText", "dcst")->add_child_text (_content_title_text);
201 if (_annotation_text) {
202 root->add_child("AnnotationText", "dcst")->add_child_text (_annotation_text.get ());
204 root->add_child("IssueDate", "dcst")->add_child_text (_issue_date.as_string (true));
206 root->add_child("ReelNumber", "dcst")->add_child_text (raw_convert<string> (_reel_number.get ()));
209 root->add_child("Language", "dcst")->add_child_text (_language.get ());
211 root->add_child("EditRate", "dcst")->add_child_text (_edit_rate.as_string ());
212 root->add_child("TimeCodeRate", "dcst")->add_child_text (raw_convert<string> (_time_code_rate));
214 root->add_child("StartTime", "dcst")->add_child_text (_start_time.get().as_string (SMPTE));
217 BOOST_FOREACH (shared_ptr<SMPTELoadFontNode> i, _load_font_nodes) {
218 xmlpp::Element* load_font = root->add_child("LoadFont", "dcst");
219 load_font->add_child_text ("urn:uuid:" + i->urn);
220 load_font->set_attribute ("ID", i->id);
223 subtitles_as_xml (root->add_child ("SubtitleList", "dcst"), _time_code_rate, SMPTE);
225 return doc.write_to_string_formatted ("UTF-8");
228 /** Write this content to a MXF file */
230 SMPTESubtitleAsset::write (boost::filesystem::path p) const
232 ASDCP::WriterInfo writer_info;
233 fill_writer_info (&writer_info, _id, SMPTE);
235 ASDCP::TimedText::TimedTextDescriptor descriptor;
236 descriptor.EditRate = ASDCP::Rational (_edit_rate.numerator, _edit_rate.denominator);
237 descriptor.EncodingName = "UTF-8";
239 BOOST_FOREACH (shared_ptr<dcp::SMPTELoadFontNode> i, _load_font_nodes) {
240 list<Font>::const_iterator j = _fonts.begin ();
241 while (j != _fonts.end() && j->load_id != i->id) {
244 if (j != _fonts.end ()) {
245 ASDCP::TimedText::TimedTextResourceDescriptor res;
247 Kumu::hex2bin (i->urn.c_str(), res.ResourceID, Kumu::UUID_Length, &c);
248 DCP_ASSERT (c == Kumu::UUID_Length);
249 res.Type = ASDCP::TimedText::MT_OPENTYPE;
250 descriptor.ResourceList.push_back (res);
254 descriptor.NamespaceName = "dcst";
255 memcpy (descriptor.AssetID, writer_info.AssetUUID, ASDCP::UUIDlen);
256 descriptor.ContainerDuration = _intrinsic_duration;
258 ASDCP::TimedText::MXFWriter writer;
259 ASDCP::Result_t r = writer.OpenWrite (p.string().c_str(), writer_info, descriptor);
260 if (ASDCP_FAILURE (r)) {
261 boost::throw_exception (FileError ("could not open subtitle MXF for writing", p.string(), r));
264 /* XXX: no encryption */
265 r = writer.WriteTimedTextResource (xml_as_string ());
266 if (ASDCP_FAILURE (r)) {
267 boost::throw_exception (MXFFileError ("could not write XML to timed text resource", p.string(), r));
270 BOOST_FOREACH (shared_ptr<dcp::SMPTELoadFontNode> i, _load_font_nodes) {
271 list<Font>::const_iterator j = _fonts.begin ();
272 while (j != _fonts.end() && j->load_id != i->id) {
275 if (j != _fonts.end ()) {
276 ASDCP::TimedText::FrameBuffer buffer;
277 buffer.SetData (j->data.data().get(), j->data.size());
278 buffer.Size (j->data.size());
279 r = writer.WriteAncillaryResource (buffer);
280 if (ASDCP_FAILURE (r)) {
281 boost::throw_exception (MXFFileError ("could not write font to timed text resource", p.string(), r));
292 SMPTESubtitleAsset::equals (shared_ptr<const Asset> other_asset, EqualityOptions options, NoteHandler note) const
294 if (!SubtitleAsset::equals (other_asset, options, note)) {
298 shared_ptr<const SMPTESubtitleAsset> other = dynamic_pointer_cast<const SMPTESubtitleAsset> (other_asset);
300 note (DCP_ERROR, "Subtitles are in different standards");
304 list<shared_ptr<SMPTELoadFontNode> >::const_iterator i = _load_font_nodes.begin ();
305 list<shared_ptr<SMPTELoadFontNode> >::const_iterator j = other->_load_font_nodes.begin ();
307 while (i != _load_font_nodes.end ()) {
308 if (j == other->_load_font_nodes.end ()) {
309 note (DCP_ERROR, "<LoadFont> nodes differ");
313 if ((*i)->id != (*j)->id) {
314 note (DCP_ERROR, "<LoadFont> nodes differ");
322 if (_content_title_text != other->_content_title_text) {
323 note (DCP_ERROR, "Subtitle content title texts differ");
327 if (_language != other->_language) {
328 note (DCP_ERROR, "Subtitle languages differ");
332 if (_annotation_text != other->_annotation_text) {
333 note (DCP_ERROR, "Subtitle annotation texts differ");
337 if (_issue_date != other->_issue_date) {
338 if (options.issue_dates_can_differ) {
339 note (DCP_NOTE, "Subtitle issue dates differ");
341 note (DCP_ERROR, "Subtitle issue dates differ");
346 if (_reel_number != other->_reel_number) {
347 note (DCP_ERROR, "Subtitle reel numbers differ");
351 if (_edit_rate != other->_edit_rate) {
352 note (DCP_ERROR, "Subtitle edit rates differ");
356 if (_time_code_rate != other->_time_code_rate) {
357 note (DCP_ERROR, "Subtitle time code rates differ");
361 if (_start_time != other->_start_time) {
362 note (DCP_ERROR, "Subtitle start times differ");
370 SMPTESubtitleAsset::add_font (string load_id, boost::filesystem::path file)
372 string const uuid = make_uuid ();
373 _fonts.push_back (Font (load_id, uuid, file));
374 _load_font_nodes.push_back (shared_ptr<SMPTELoadFontNode> (new SMPTELoadFontNode (load_id, uuid)));
378 SMPTESubtitleAsset::add (dcp::SubtitleString s)
380 SubtitleAsset::add (s);
381 _intrinsic_duration = latest_subtitle_out().as_editable_units (_edit_rate.numerator / _edit_rate.denominator);